Ezzat, I don't usderstand one thing.
If a man is interested in a freindship with a woman, what can prevent him from doing what he wants? Irregradless of 'the concept'?
You say, 'changing concept' would be better, so it seems you think people can be interested in this. Then well, if people can be interested in this, then some must do that? And not because of sexual attraction.
But if you think peopel can NOT be interested in that... then WHY?